Coil-forming machine



June 21 1`27.

L.A.COLE

COIL FORMING MACHINE Filed April 1o, 1925 S Sheets-5heet l Junev 2l 1927.

' v1,63?o6s 4L.A. 'COLE l coIL FORMING MACHINE Filed April 10. 1925 6 shuts-sheet 2 x Q l "m QN, f N x Qw/999Mbmmm- I Y n a L. A. CJOLE con,` FORMING MACHINE '6 Sheets-Sheet .5

Filed April l0, 1925 1 633 068 June 21, 1927. L' A. COLE crn vonnis@ MACHINE Filed fil l0, 1925 l6 Sheets-Sheet `4 I "A i WALZM June 21,1921 l L. A. COLE COIL FORMING MACHINE Filed April'lO. 1925 e sheets-sheet 5 June 21,1927. 7 L. A.'co| E" L633068 COIL FORMING MACHINE Filed April l0. 1925 6 Shee'rls-Sheet 6 *sV Q R Q lo *Q Q o xN-E YY; N

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` Mmm? l ZM'ZZI -rf i isd Patented June 21,1927.

UNITED STATES OFFICE.

tonne A. com, or nRAivciromn;Y ONTARIO, CANADA.

COIL-FORMING MACHINE. fv,

. Application-flied April 1o, 1925. serial no. 22,146.A

spread is in such a position` as to .permit ot the easy application of the clips. or tie Wires usually employed 'for holding the coil conductors togetherfgbefore taping, and it consists essentially ofthe arrangement vend con* struction of parts as hereinafter more parN ticularly explained. v

Fig. 1 isa perspective vien7 of my machine shown in the Winding position.

2 is a similar view to Figure 1 showing the parts in the spreading position.

Fig. 3 is a similar view to Figure 2 showing` the vparts inthe position 'they assume when spreading the loop to 'form the iinished coil, but in theinverted position .it assumes during the spreading operation.

Fig. l is a plan View of my machine.

Fig. 5 is alongitudinal sectional view on line 5 5 Figure 4 showing the parts in the loop Winding position. l

Fig. 6 isn longitudinal sectional .detail on line 6 6 Figure 4l showing the parts in the loop Winding position.

Fig. 7 is 4a similar vienT `to Figure 6 showingl the parts in the spreading position.

Fig. 8 is a tansverse sectional view on line 86 Figure 4.

Fig. 9 is s cross sectional view on line 9 9 Figure 8.

Fig. 1.0 .is a perspective detail of one of the Winding jaws.

Fig. 11 is a. v.detail inpelevation of th-e wound loop. l

Fig. 12 a perspective detail of the loop spread to form the coil. y

In the drawings like characters o'f referenceindicate. corresponding parts in ench figure.

1 indicates a suitably driven shaft carrying the main supporting member 2in the form oi` a bar. provided with aflongitudinallyextending open ended slot.

,4 :is a transverse bar member Whichis secured to v.the supporting member y2 atl apoint intermediatelyfot itslength by mea-nsfoi' bolts 5 or other securingineans. The .mem-- ber at is provided with longita'ldinal` 4l* and 110 extending fromy each side of the centre thereof.

A.Each ja'wf and 7 comprises a bar por- .tion 46 provided ,with a longitudinally eX# tending slot 6O andan upt-urned portion 61 extending from. one end .of the bar portion 6X. lEach of thejaws 6 and/7 are set in a stationery position by a. bolt 8 extending` down through each slot 41X end 19, and through the slot .6O Vof each jaw 6 and 7. By

this means the jaws 6 ,and 7 may be adjusted i either transversely of the machine according t0 the` size ,of the-coil or transversely of the supporting,member. 4, aecording'to the vthickness of the coil. A,

.9 and 1.0 are a pair of rod members. p 11 and 12y are blocks, .each providedivith `an oritice l2X through which corresponding rod member 9 or 10 extends, beingfadjustably secured therein by means of a set screw The oonvergingendsof,the rod members 9 and 10 are-'provided with an intereengaging tongue andl jaw connection 14 through which a pivot bolt 15 extends for connecting the parts together, i

16 is a loop swung upon the pivot bo'ltl Y and `tovvvhich is connected a tension spring 1'71', ,he opposite end out ,Such spring being connected to an eye 18 carried on the supportingl member 2.

19 and 2O are rod freelyv throughtheblocksll and 12 to one side .of the rods 9 and 10.

`l21 .and 22ers blocks slidably c arriedupon the rods 19and 20 in proximity to their opposite end.

`23 and v24 are converging rods similar to the rods 9 and 10.

25 is a slide` bar slidably held Within the open ended slot of thesupporting bar 2, so as to move longitudinally thereof. In order to support the bar 25Within the slot 3, I provide cross plates 26 andl 27, each having ya centre open1ng28,

`lower kend upon theplate 2 7 and, securedin position' ,by Ineens of lthe i securing `mit .341: 'which isl threaded down 4.upon the stein 32 members which extend so as to Vadjust the compression of `the spring 33.

is a stem extending from the slide bar 25 around which extends a `compression spring 36 bearing upon the plate 27 and adjusted by means of the adjustingnut 37 to vary the compression of the spring 36.

It will be understood thatthe plates 26A and 39 is a tension spring connected at one end to the eye 38 and Vat its opposite end to the converging ends of the rods23 and 24,

in a similar way to that described in connection with the spring 1,7 and rods 9 and 10.

40 and 41 are jaw members similar to the jawmembers 6 and 7 and similarly carried in a stationary positionupon the bar29 and in an inverted position to the jaw members 6 and 7, the jaw members 6 and7 gripping the lower side of the loop, and the jaw members 40 and 41 gripping the upper` side of the loop as shown in Figure 2.

42 and 43 are bolts adjustably secured within the slots 4x and 4 the heads 42x and 43x of which form stops for limiting the outward movement of the rods `19 and 20, and parts carried thereby, which I will now describe.

Similar bolts are provided in the slots 3() and 31 of the bar 29. J

44 and 45 are blocks set in a stationary position by set screws 46 respectively to the rods 19 and 20 so as to be adjusted accord-4 ing to the thickness of the coil.

47 and 48 are blocks also secured to the rods 19 and 20, the blocks 44 and 45 being spaced apart from the blocks 47 and 48 at a distance equal to the width of the loop which is to be wound around the rods 19 and 20 between the spaced apart blocks. l

In order to hold the turns of the conductor within the jaws 6 and 7, I provide a piece of key stock 49 fitting the jaws 6 and 7, and a similar piece of key stock 50 fitting the jaws 40 and 41. j

51 and 52 are clamping plates Awhich are clamped down upon pieces of key stocks 49 and 50, to clamp them uponthe turns of the loop. It will of course be understood that other means may be employed for securing these key stocks temporarily in place, and the means shown is only illustrative of one way of producing this result.V

53 is a bar member secured at one end to the block 47 and passing freely in contact with the block 48. I

59 is a plate adjustably secured by bolts 60 within the slotted opening 61 of the bar member 53, the plate 59 being providedwith upturned tongues 62 forming a receiving recess into which the block 48 lits during the winding operation. When the block 48 is held in this position a key plate 63 is passed Vdown through the slotted openings of the bars 4 and 53 when one bar underlies the The first operation of my machine is to form a loop. During the winding operation the parts assume the position shown in Figures 1, 5 and 6, that isv the transverse bars 4 `and 29 are in closely adjacent positions, the jaws 6 and 7 overlapping the jaws 40 and 41 so as to receive the upper and lower runs or sides ofthe loop. The blocks 11 and 12, 21 and 22 in which the rods 19and 20 are slidably held are located directly to the outside of the transverse bars 4 and 29, the rod'20 being `secured to the bar 53 and the rod 19 connected to such bar so that they move together in a direction longitudinally of the rod '19, the rod being free to move longitudinally of the bar member 53( as the parts assume the spreading position.

i The bar member 53 is `located during the winding operation beneath thetransverse member 4 as illustrated in Figure 5. The slide bar 25 is secured to the transverse member 29 and therefore they move together to the spreading position with the rods 23 and 24 and the spring 39 connected thereto. The rods 9 and 10 and spring 17 are held in a stationary position during the movement of the partsto the'spreading position. In starting the formation of the loop, the end of the lead wire or other member forming the loop is drawn from the reel and laid `within the ljaws 6 and 7. The keyV stock 49 is then inserted in these jaws in the position shown, and is clamped down so as to firmly hold the lead wire within the jaw during the initial turning movement. The shaft is then rotated one turn so that the wire is passed around the rods 19 and 2O and brought into juxtaposition to the opposite end of the key stock and into the jaws 4()` and 41. When thus wound it has suicient frictional grip within the jaws to hold it in position during the lremainder of the winding operation..

The key stock is therefore removed and the winding operation completed. After the winding operation has been completed, the key stocks 49 and 50 are inserted respectivelyin the jaws 6 and 7 and 40 and 4l los" and vclamped down by means similar to that .hereinbefore described so asto firmly secure formed.

In Order that the baimembers 19 and 2O be held definitely in position during the winding' operation, the plate 59 is adjusted upon the bar 53 and Vthe block4`8` inserted therein. By vthis means the block and consequently therod 19` is held ina definite spaced apart rela-tion tothe rod'20. In order that `the Yblock. begposit'ively held in 'this lposition, the rod member 53 is secured to the .bar member 4 by means of the vkey '63. 1t

will thus lbe seen 'thatA the block 48 is secured by the plate y59, between the bar members 53 and 4.

It will thus be seen by this construction the rodmembers' 1'9 and 20 are held and locked in definite spaced apart relation to form a loop of definite size. In order 'to rary the size of the loop, 'the plate 59 and the bolts 42X and 43c are adjusted transvversely of themachine, thereby regulating the length of the loop. After the winding operation is completed, the locking key 63 is removed, the free end of thef bar ymember is then manually lifted so that the block 48 Clears the 'projection '62, the tension in the loop draws the block 48 and parts conneeted therewith slightly inward 'out of alignment with 'the projection 62. The bar 25 is then manually drawn outward by any 'suitable means longitudinally of 'the slot 3.

It will .thus be seen 'that by 'this movement the bar member 29 and jaws 40 'and 41 are drawn outfit/ard carrying with Ithem the corresponding portion of the loop, that vportion of the loop held in the jaws 6 and 7. .remaining stationary. 'As the bar member k29 drawn outward it engages the blocks 21 and carrying them outii'a'rd u'pfon the rods l19 and 2t). f

j It will be readily understood that the ends of `the loop .passing between the blocksll?? and 44 and 48 and 45 arereeessarilydrawn outward in the direction of arrow, see' 'Figiii-e3, 'byfthe 'movement of that portion-of the' loop held within p the 'jaws Y40 `and 41.

`Si multanetnisly the rods 19 and 29 slide th ough the blocks 11 and 12. 'By referring par iciila'rly todiigure 3, it willybegfseen that the oppositely directed faces of the blocks 47 `and 44,- a-rid the-blocks@ s116145 are flushwiththe vperijohery -of the rods '19 and 20'ju'st1barely sufficient metal'being` letti-oir forming the orifice.

By this means w-hen'the loop isk spread, the endsof the loop incline out-ward in oppodirections over thesel block faces as clearlv indicatedin Figure 3, thereby spreading 'he loop in the form required toform the completed coil thesrdes of the loop assuin ing a position'equildistant from an imaginary centre line of the loop as indicated by the dash line m-'x Figures 4, 11 and 12 and thelends of the loop drawing inward towards each other along` thiseentre lineto permit the spreading-of the sides of the loop. Necessarily as the sidesof the loop are drawn apart the endsremain centrally therebetween as there is nothing 'to make themv assume any other position jas the loop spreads and the ends drawn inward 'toward each other on the line m-aa lt ywill of course be understood that as this voperation takes place, the longitudinal distancebetween the ends of the rcoil becomes reduced and -consequently the rods 19 and A20 are gradually drawn together, exerting [greater tension upon the springs 17 and-39, thereby keeping` the tension on the ends of the loops as the loops are spread, so 'tliat the strands are held in their proper shape and relativev position. f

In orderto remove the completed coil, the springs y39 and 17 are 'detached and the blocks 21, 22,` 11, and 12, removed from the rods 19'and 2O carryingwith tliemthe rods 23 and 24, va n'd9 and 10. By this means the freel removal of the rods `19and 20, and the parts Vcarried"thereby is permitted, such rods being 'slipped Vinward Vof the machine, so as to .clearthe ends 'of the coil and enable them to be passed l'ongitudinally outward from the coil.J Vh'en this is Vdone thecoil is left in the jaws' and 7 and '40 and 41 clear of all mechanism, and thereby enables fthe 'easy application "of the usual clips or tie wires to the coil. When the tie wires are applied, the key stock 50 is removed, the coil slipped fromout `ofthe jaws 4() andv y41, the bar loop iis for-'med havingr parallel sides, and

Acour]pri".---,irig loep-end forming and carrying -iiier'nhers betweeiiwnieh ther-parallel sides fof 'the loop ext-end, a supporting structure k1 adapted to 'resiliently yheldfthe loopV endv 'cair- Irie'rs apart', end wh-icfh the carriers move freely transverse-ly ofthe loop, mean-s vsta.- 'tio'nary in "ifelationv'to-the rotatablemember and engaged 'by i vone longitudinal loep side at points spaced from the ends of the loop as the loop is y formed, means movable in relation to the rotatable memberA laterally of the loop for engaging `the other longitudinal loop side at points also spaced from the .ends of -the,loop, whereby by the outward move- ,ment of the movable member the loop sides the rotatable member, and on which a closedV loops is formed having parallel sides, and

comprising loop -endiorming and carrying members, means for maintaining a yieldable tension longitudinally of the loop, a suportinfr structure in which the c arr incr t b members are held to move transversely ot the loop, means carried in a stationary position upon the rotatable member for engaging one longitudinal side of the loop,a transverse member also carried on the rotatable member and movable transversely of the loop, and gripping means carried by the stationary and movable members for engaging the sides of the loop. a

3, In a coil forming machine, a rotatable member, a loop forming device carried by the rotatable member, and onwhich a closed loop is formed having parallel sides, and comprising loop Vend forming and carrying members, means for maintaining a yieldable tension longitudinally of the loop, a supporting structure in whichV the carrying members are held to `move transversely of the loop, means carried in a stationary position upon the rotatable member for engaging one longitudinal side of tbe-loop, a transverse member also carried on the rotatable member and movable transversely of the loop, gripping means carried by the stationary and movable members for engaging the sides of the loop,and mea-ns for locking the loop end carriers in their eXtreme spread apart position during the Winding of the loop and` removable during the spreading operation. n 4. In a coil forming machine, a rotatable member, a loop forming device carried by the rotatable member, and on which a closed loop is formed having parallel sides, and comprising loop end forming and carrying members, means for maintaining a yieldable tension longitudinally of the loop, a supporting structure in which the carrying members are held to move transversely of `the loop, means carried in a stationary position upon the rotatable memberfor engaging one longitudinal side of the loop, a transverse member also carried on the rotatable member and movable transversely of the loop, gripping means carried by; the stationary and movable members for engaging `the sides of the loop,means for locking the loop end carriers in their` extreme spread apart position during the Winding of the loop and removable during the spreading operation, `and y means for limiting the y l spreading apart of the carriers.

5. In a coil formingmachine, a rotatable member, a loopV forming device carried by the rotatable member, and on which a closed bers are held tomovetransversely ot the` loop, means `carried in a stationary position upon the rotatable member for engaging,

one longitudinal sideof the loop, a tra-nsverse member also carried on the rotatable member and, movable transversely of the` loop, grippingv means carried by the stationary and movable members for engaging the sides of the loop, andV adjustable means for `locking the loop end carriers in their extreme spread apart position during the winding of the loop and removable during the spreading operation. i

y 6. In a coil forming machine, a `rotatable member, a loop forming device carried by the rotatable member, and on which a closed loop is formed having parallel sides, and comprising loop end forming and carr ing members, means for maintaining a yiel able tension longitudinally of theloop, a supporting structure in which the carrying members are held to move transversely of the loop, means carried in a stationary position upon the rotatable member for engaging one longitudinal side of the loop, a transverse member also carried on the rotatable member and movable transversely of the loop, gripping meanscarried by the station,1

ary and lmovable members for engaging the sides of the loop, means for locking the loop end carriers in their extreme spread apart position during the Winding of the loop and removable during the `spreading operation, and adjustable means for limiting the spreadingl apart of the carriers.

7. .In a coil forming machine, a rotatable shaft, a bar member extending from the y shaft end in a longitudinal direction, a transverse bar member secured to the longitudinal member, a transverse bar memberca-rried by the longitudinal member and movable 1ongi` tudinally thereof froma position adjacent i to the stationary bar member, hooked means carried by the stationary and movable bar members and overlapping each other so as members are `in an adjacent position', and adapt-ed toireceive the upper and lower sides of the loop as it is Wound, a supporting structure resiliently held from movement in 125 .to be in vertical alignment when the bar*` La vertical plane and located adjacent both to the stationary transverse member and to the movable transverse member, rod members located at each side of and parallel to the bar member of the shaft, blocks carried by each of the rod members n spaced apart position, and having their upper and lower faces flush with the corresponding` portion of the rod member and between which blocks l0 and around the rod member, the ends of the loop are adapted to pass as it is Wound and over the flush faces of Wlnch the sldes ad]acent to such ends are adapted to extend as v the loc-p s drawn'nto the spread position, and means with which the movable transverse bar member engages to draw the rods n a correspond'mg` direction as such transverse member is moved.

LORNE A.. COLE. 

